[chirp_users] CHIRP 0.1.9b7

Hi all,

I just posted 0.1.9b7 with the following changes:

- Fix memory numbering weirdness in 9x driver - Make 9x driver cache empty memories to avoid re-checking

Hopefully this will actually addres most of Dave's issues. The memory numbering thing was so broken that a number of other things could have been breaking, so I decided to get another version out to test quicker.

Thanks a lot to Susan who did some excellent debug work before I even got to it which made the process of fixing it much quicker :)